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Nuovo Pignone Spa

Marco Santini

Giorgio Marchetti

Ernesto Nasini

Carmine Allegorico

Claudio Antonini

Francesco Bellantone

Francesco Chiesi

Leonardo Tognarelli

Riccardo Bagagli

Marco De Iaco

Fabio Baldanzini

Philippe Claudon

Francesco Buffa

Ludovic Pesenti

Marc Malivernay

Marco Scarponi

Laura De Stefanis

Andrea Gabbrielli

Marco Baldini

A turbomachinery plant is conceived to maximize the power generated by an electrical reversible machine when works as a generator, by reducing the power absorbed by a compressor connected to the electrical reversible machine. The compressor is connected to an antisurge circuit included in the turbomachinery plant, as well as to a suction unit by a first line and to a gas collection unit by a second line and the turbomachinery plant comprises a gas depressurizing compressor so that, when in use, an amount of gas sucked by the gas depressurizing compressor moves from the antisurge circuit to the gas depressurizing compressor and the compressor rotates encountering less resistance and absorbing less power and the power generated by the electrical reversible machine is maximized.

Turbomachinery plant to maximize the power generated by an electrical reversible machine

The disclosure concerns a waste heat recovery system that is configured to operate as a prime mover in emergency case, when the heat source is down. The waste heat recovery system comprises, in addition to a heater configured to circulate a working fluid in heat exchange relationship with a heating fluid from the heat source to heat the working fluid, an independent auxiliary heat source configured to provide an additional heating fluid in heat exchange relationship with the working fluid, to heat the working fluid. The system is provided with a secondary heater, which is configured to circulate the working fluid in heat exchange relationship with the additional heating fluid from the independent auxiliary heat source and which can be used to replace the heater or in combination with the heater.

Waste heat recovery system as a backup system for a machine for the production of energy

A turbomachinery plant comprises a mechanical hybrid gas turbine and a cooling system for the mechanical hybrid gas turbine conceived to increase/decrease a flow rate of a refrigerant fluid cooled by a chiller so as to an amount of air in an air filter chamber of a gas turbine module reaches a temperature corresponding to a predetermined temperature value associated to a predetermined power value of a gas turbine in a first degradation curve or an amount of air in an electrical reversible machine of a variable frequency drive electric unit reaches a temperature value corresponding to a predetermined temperature value associated to a predetermined power value of the electrical reversible machine in a second degradation curve, depending on a power demand. Also disclosed is a method for cooling an amount of air in a gas turbine module and in a variable frequency drive electric unit.

Turbomachinery plant comprising a mechanical drive hybrid gas turbine and a dynamic cooling system for the mechanical drive hybrid gas turbine

The disclosure concerns a waste heat recovery cycle system and related method in which a Brayton cycle system operates in combination with a Rankine cycle system. The Brayton cycle system has a heater configured to circulate a fluid, namely an inert gas, in heat exchange relationship with a heating source, such as an exhaust gas of a different system, in order to recover waste heat from such different system by heating the inert gas. The Rankine cycle system has a heat exchanger configured to circulate a second fluid, in heat exchange relationship with the inert gas of the Brayton cycle system to heat the second fluid while at the same time cooling the inert gas. The second fluid can be selected among fluids having a boiling point at a temperature lower than the temperature of the inert gas from the expansion unit/group in the Brayton cycle system.

Plant based upon combined Joule-Brayton and Rankine cycles working with directly coupled reciprocating machines

A waste heat recovery system, based on a Brayton cycle, comprises a heater configured to circulate carbon dioxide vapor in heat exchange relationship with a hot fluid to heat the carbon dioxide vapor. An expander is coupled to the heater and configured to expand the carbon dioxide vapor. A compressor is configured to compress the carbon dioxide vapor fed through a cooler and a heat exchanger is adapted to circulate the carbon dioxide vapor from the expander to the cooler in heat exchange relationship with the carbon dioxide vapor from the compressor to the heater, wherein the expander and the compressor are mechanically coupled volumetric machines.

System for recovering waste heat and method thereof

Provided is a method for determining a filter change schedule for a gas turbine. The method includes determining differential pressure variation across filters and a time elapsed since a last filter change, where the differential pressure variation and the time elapsed are each associated with at least one filter disposed in the gas turbine. The method also includes estimating a future power loss and/or a future fuel consumption caused by the differential pressure variation. Moreover, the method can include determining the filter change schedule based on a cost of the filter change, the time elapsed, a cost of the future power loss, and optionally a cost of the future fuel consumption, a cost of emission variation, and a cost of production loss.

Methods and systems for optimizing filter change interval

A method for predicting the residual useful life of an air filter arrangement is described. The method includes the following steps: providing a plurality of predetermined reference degradation curves; measuring a degradation parameter of the filter arrangement; and estimating the residual useful life of the filter arrangement by comparing the predetermined reference degradation curves and an actual degradation curve defined by measured values of the degradation parameter.

Method and system for predicting residual useful life of an air filter

A filter system for filtering intake air of a gas turbine is presented. The filter system includes a first filter arrangement. The filter system further includes a second filter arrangement located downstream from the first filter arrangement and having a collection efficiency higher than a collection efficiency the first filter arrangement. Furthermore, the filter system includes a guard filter arrangement located between the first filter arrangement and the second filter arrangement, where a collection efficiency of the guard filter arrangement is lower than the collection efficiency of the first filter arrangement.

Filtering chamber for gas turbines and method of maintenance thereof

A drive system for driving a load, comprising a gas turbine configured and arranged for driving the load, an electric motor/generator electrically connected to an electric power grid, a first load coupling connecting the gas turbine to the load, a second load coupling, connecting the load to the electric motor/generator. The electric motor/generator is adapted to function as a generator for converting excess mechanical power from the gas turbine into electrical power and delivering the electrical power to the electric power grid, and as a motor for supplementing driving power to the load. The drive system comprises furthermore a disconnecting device to reversibly disconnect the load from the gas turbine, so that the load can be driven only by the motor.

Gas turbines in mechanical drive applications and operating methods

A filtering chamber for a gas turbine having a combustor, compressor and air inlet duct, and a corresponding maintenance method is described. The filtering chamber includes a first chamber in an inlet plenum; a second chamber in the inlet plenum; and an air bypass mechanism configured to reduce a pressure difference across a final filter that separates the first chamber from the second chamber.

Filtering chamber and method for maintaining same

An inlet air filter device including: at least one passage for delivering an air mass from an inlet section to an outlet section of the inlet air filter device, a water separator in the at least one passage for separating water in the air mass, the water separator positioned between the inlet section and the outlet section, a bypass element movable between a first open position in which the air mass is forced to cross the water separator and a second closed position in which the air mass flows from the inlet to the outlet section without crossing the water separator; a shutter element which is actuatable to co-operate with the bypass element for isolating the water separator from the air mass when the bypass element is in the second closed position.

Inlet air filter device for a power plant

A drive system for driving a load by a gas turbine. The gas turbine comprises a gas generator having a gas-generator rotor and comprising at least one gas-generator compressor and one high-pressure turbine driving the gas-generator compressor. The gas turbine further comprises a power turbine having a power-turbine rotor, which is torsionally independent of the gas-generator rotor. The load is connected to the power-turbine rotor. The system further comprises an electric motor/generator mechanically connected to the gas-generator rotor and electrically connected to an electric power grid. The electric motor/generator is adapted to function alternatively: as a generator for converting mechanical power from the gas turbine into electrical power; and as a motor for supplementing driving power to the load. A set of movable nozzle guide vanes is arranged at the inlet of the power turbine.

Growing community of inventors

Florence, Italy

Marco Santini